DocumentCode :
2607639
Title :
Realtime 3D position detection of human pupil
Author :
Ebisawa, Yoshinobu
Author_Institution :
Fac. of Eng., Shizuoka Univ., Hamamatsu, Japan
fYear :
2004
fDate :
12-14 July 2004
Firstpage :
8
Lastpage :
12
Abstract :
A real time 3D pupil position detection system necessary for non-contact and remote eye gaze detection allowing head displacement was developed. So far, methodology had been proposed that estimates 3D positions of eyes from their 2D positions detected from the face images captured by two stereo cameras. However, using eye position detection is not prospective for precise and stable eye gaze detection. In the method proposed in the present study, several near-infrared LEDs were arranged around the apertures of two cameras. These two sets of light sources were alternately switched on and off synchronously with the even/odd signal. After differentiating the bright and dark pupil images obtained from each of the two cameras, the center coordinates of the two pupils were detected. An image processing algorithm for precise and stable pupil detection, including the pupil detection method utilizing a blink, is described. In one of the experiments, the 3D position of the pupil of one eye was measured by the two stereo cameras. Another narrow camera, which detects the centers of both pupil and corneal reflection images necessary for eye gaze direction determination, placed on a pan-tile unit could be automatically directed toward the 3D pupil position.
Keywords :
cameras; computer vision; eye; object detection; position measurement; real-time systems; stereo image processing; tracking; user interfaces; 3D position measurement; eye gaze detection; eye gaze direction determination; eye position detection; face images; head displacement; human interface; human monitoring; human pupil; image processing algorithm; light sources; near-infrared LED; noncontact eye gaze detection; pupil detection; pupil images; realtime 3D position detection; reflection images; remote eye gaze detection; stereo cameras; Apertures; Cameras; Eyes; Face detection; Head; Humans; Image processing; Light emitting diodes; Light sources; Real time systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Virtual Environments, Human-Computer Interfaces and Measurement Systems, 2004. (VECIMS). 2004 IEEE Symposium on
Print_ISBN :
0-7803-8339-7
Type :
conf
DOI :
10.1109/VECIMS.2004.1397176
Filename :
1397176
Link To Document :
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